furnace blower wiring

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furnace blower wiring

From: flowerpot@fuse.net
Category: HVAC
Remote Name: 216.68.31.44
Date: 12 Nov 2001
Time: 02:30 PM

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I have a blower fan on my furnace that is controlled by a switch. The problem is, the fan never goes off once it is turned on. When the house heats up to the specified temperature, the heat kicks off, but the fan continues to put out air. I took the thermostat off and found 3 wires. A red one, a white one and a black one. The red and white were connected, but there was no place to connect the black one, so it is just wrapped around the casing. Should I just install a new thermostat, or is something wired incorrectly? Please help... (ps--we do not have central air).

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